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kalinius
1st Topic

4 Messages

Thursday, September 5th, 2024 9:42 PM

Port Forwarding Not Working

Hello. I attempted to open a port on my router for one of my devices. It looks perfect in the Xfinity app. It shows the correct port number for the correct device, and with TCP/UDP.

However when I check to see if the port is actually open using an external site such as portchecker.io, it shows the port is closed.

Any ideas? It’s as if the router is simply ignoring the port forwarding I have put in place. 

Edit: The port number is not a common one that Xfinity blocks (like 25).

Edit 2: It looks like many people have had this exact issue over the past couple of years. Is it an equipment issue? The only solution seems to be to buy a different router.

Edit 3: I even disabled IPv6 on the computer and created a DMZ for the computer’s IP address. The port STILL shows closed!

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Updated 

2 months ago

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XfinityChelseaB

Official Employee

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1.2K Messages

3 months ago

Hello @kalinius, Thanks so much for taking a moment out of your day to leave a post on our community forum. Have you checked out: Set up port forwarding or What is port triggering? for further help?

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kalinius

4 Messages

@XfinityChelseaB​ those articles are not helpful in my situation. As I’ve stated before, the port is added correctly in the “port forward” section of the app, but it’s not working. The article shows how to add, edit and delete port forwards, which I already know how to do.

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3 months ago

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XfinityChelseaB

Official Employee

 • 

1.2K Messages

@kalinius, Thanks for the update, I appreciate it! Did you setup a static IP by chance?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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3 months ago

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kalinius

4 Messages

@XfinityChelseaB​ yes, the computer that needs the port open has a reserved IP. I replaced the modem/ router and it’s doing the same thing. What next?

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3 months ago

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XfinityJorge

Official Employee

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1.7K Messages

Let us take a deeper look into this over DM. Can you send us your name and address over DM so we can work on this? Here's the detailed steps to direct message us: 
• Click "Sign In" if necessary 
• Click the "Direct Message" icon (upper right corner of this page) 
• Click the "New message" (pencil and paper) icon 
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list 
• Type your message in the text area near the bottom of the window 
• Press Enter to send your message
 
 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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3 months ago

0

OpenDePortsPlz

4 Messages

Are you able to share what was fixed here?

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2 months ago

0

EG

Expert

 • 

107.1K Messages

3 months ago

@kalinius @XfinityJorge 

Please circle back here and post any possible solutions for the issue here in these open public forums so that all readers here may benefit from the exchange / info. This is in keeping with the spirit for which these public help forums were originally intended. Thank you.

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OpenDePortsPlz

4 Messages

Has there been any resolution to this yet? I had multiple ports open a few days again and then when editing a port number, it borked and stopped working?

I can't understand why we are forced to use port fowarding through the xfinity app when there is a page for it in the Gateway portal.

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2 months ago

kalinius

4 Messages

No solutions as of yet. It was suggested that I replace my gateway router. I did that and it’s having the exact same issue. Apparently there could be an issue with my line so a technician will be at my home tomorrow to take a look. 

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2 months ago

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user_h1740a

6 Messages

i have been having the same issue and have been working with the advanced technical support team so far no luck but we are pushing to get a resolution, if you have your own modem with port forwarding you can use this too just have to activate it with comcast online

Brett

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2 months ago

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